Quick Answer
Choose a bullet weight that balances penetration and expansion, typically 90-120 grains for medium-sized running deer, taking into account the deer's velocity and the distance to the target.
Deer Velocity Considerations
When selecting the right bullet weight for running deer, consider the deer’s velocity, which averages around 25-30 feet per second (fps). For a 90-120 grain bullet, you’ll need a minimum of 2,000-2,400 fps to ensure adequate penetration. This allows the bullet to expand effectively and transfer kinetic energy to the target, resulting in a cleaner kill.
Distance and Bullet Weight Correlation
As the distance to the target increases, the ideal bullet weight decreases. For shots beyond 100 yards, a lighter 90-100 grain bullet is recommended to maintain sufficient velocity and penetration. For closer shots, a heavier 110-120 grain bullet can be used to increase the kinetic energy transfer and ensure a cleaner kill. A general rule of thumb is to reduce the bullet weight by 10-20 grains for every 50 yards of increased distance.
Bullet Expansion Characteristics
It’s essential to choose a bullet with the right expansion characteristics for running deer. A bullet that expands too quickly may not penetrate deep enough, while one that expands too slowly may not transfer enough kinetic energy. Look for bullets designed specifically for hunting medium-sized game, with a diameter expansion of 0.5-1.0 inches and a penetration depth of 12-18 inches. This ensures a clean kill and minimizes the risk of a tracking situation.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.